On Tue, 29 Mar 2005, Marc Perkel wrote:
> In my system filter I'm doing an "unseen save file".
>
> But - after that - I'm modifying headers - and what is being saved is the
> message with the headers are modified. So I guess that the save doesn't occur
> right away then?
This is all explained in the documentation. From the filter.txt file:
1.2 Filter operation |
|
It is important to realize that, in Exim, no deliveries are actually made |
while a filter or traditional .forward file is being processed. Running a |
filter or processing a traditional .forward file sets up future delivery |
operations, but does not carry them out. |
|
The result of filter or .forward file processing is a list of destinations |
to which a message should be delivered. The deliveries themselves take |
place later, along with all other deliveries for the message. This means |
that it is not possible to test for successful deliveries while filtering. |
It also means that any duplicate addresses that are generated are dropped, |
because Exim never delivers the same message to the same address more than |
once. |
--
Philip Hazel University of Cambridge Computing Service,
ph10@??? Cambridge, England. Phone: +44 1223 334714.
Get the Exim 4 book: http://www.uit.co.uk/exim-book
